Statistics and analysis of foreign military medium and heavy UAV accidents

With the rapid growth of military medium and heavy UAV(Unmanned Aerial Vehicle) equipment, the steady prolongation of training/operation time, and the gradual enrichment of operation mode, the UAV is facing many practical challenges, such as high system complexity, fast update of new technology, rapid development of anti-UAV defense technology, etc. The number of accidents of UAV equipment is increasing, and the reliability and safety problems are increasing obviously. In this paper, the latest accidents of foreign medium and heavy UAVs in the past 10 years are analyzed. Combined with the performance and technical characteristics of each equipment, the accident stages, causes and rules are classified, summarized and analyzed in detail, and the accident trend is predicted. Finally, the equipment design, use suggestions and safety countermeasures are put forward to provide reference for reducing the accident rate of domestic UAV system and forming the safety and reliability requirements of domestic UAV system.